A513 Cold Roll Carbon Steel Round Tubing 1-1/8in OD - Durable 48in

In this review the A513 Cold Roll Carbon Steel Round Tubing is examined for workshop and industrial use; its main appeal is straightforward strength and dimensional utility. Buyers who need a straight, rigid section of 1018-style carbon steel will appreciate that this tube meets ASTM-A513 and arrives as a 48in length ready for cutting, drilling or fabrication. The review focuses on fit for pins, shafts and structural uses, noting that the tubing's steel quality and wall thickness deliver reliable rigidity while requiring sensible expectations for machinability and welding.

Key Features

• Material: A513 cold roll carbon steel gives the tube high strength and rigidity, which helps when parts must resist bending or wear.
• Dimensional spec: The 1-1/8in outside diameter with a 1in inside diameter and 0.065in wall provides a compact, predictable profile for shafts, spacers, and sleeves.
• Length: The 48in length is long enough for multiple smaller parts or a single long run, reducing joins for cleaner fabrication.
• Standard compliance: Meeting ASTM-A513 means the tubing follows an established specification for drawn-over-mandrel mechanical tubing used in industrial applications.
• Typical uses: As a 1018-type carbon steel, it suits pins, rods, shafts, spindles and sprockets where hardness and strength are needed.

Who It's For

The tubing is a good fit for metalworkers, machine shops, and DIY fabricators who need a straightforward, strong round tube to machine into pins, shafts or sleeves. It is also useful for small equipment repairs where a consistent, drawn-over-mandrel tube profile is important.

Those who need excellent weldability or the easiest possible machining should look elsewhere or plan for slightly lower machinability compared with milder steels; likewise, if near-exact inner diameters are critical for a press fit, confirm sizing before relying on a slip fit.

Pros & Cons

Pros

• Good overall strength and rigidity for structural and rotating parts.
• Consistent outside dimension makes it easy to size for collars, bearings and housings.
• Meets ASTM-A513, offering buyers confidence in specification compliance.
• Long 48in length provides flexibility for multiple cuts or longer components.

Cons

• Inner diameter can be slightly smaller than expected for some customers, which may affect tight-fit applications.
• Lower machinability and weldability compared with softer steels require adjusted tooling and technique.

Specifications

Material	A513 cold roll carbon steel (1018-type)
Outside Diameter	1-1/8in
Inside Diameter	1in
Wall Thickness	0.065in
Length	48in
Standard	Meets ASTM-A513

Our Verdict

The A513 Cold Roll Carbon Steel Round Tubing is a sensible, value-oriented choice for fabricators and repair work that need a sturdy, drawn-over-mandrel tube with predictable outside dimensions. It is particularly good for turning into pins, shafts and spindles where steel quality and rigidity matter; those needing easiest possible welding or exact inner-bore tolerances should plan accordingly or select a different alloy.

Frequently Asked Questions

Is this tubing ready to machine?
The tubing arrives as a drawn-over-mandrel length suitable for cutting and machining, but expect slightly lower machinability than mild steel.

Will the inner diameter fit tight press components?
Customers report the inner diameter is generally accurate but can be slightly smaller than expected, so verify before relying on a precision press fit.

Can this be welded easily?
It can be welded, but A513/1018-style carbon steel has lower weldability than softer grades, so use appropriate preheat and procedures for best results.